What the calculator can do
Capital gains and profit tools help you sketch buy/sell scenarios with fees. They do not know your local tax lot method, wash-sale rules, or filing deadlines.
Use them to organize numbers before you talk to a tax professional or export exchange CSVs.
What you must still verify
Cost basis method (FIFO, specific ID, average), holding period, income versus capital treatment, and whether your venue reports to authorities. CryptonicTools cannot answer those for you.
Methodology explains fee-aware P&L math; Disclaimer repeats that nothing here is tax or legal advice.
Practical path
Estimate with the tool, export or screenshot inputs, then reconcile against exchange history and professional guidance for your country.